Philosophy

A philosophy professor gave a one question final exam. The professor picked up his chair, plopped it on his desk and wrote on the board: "Using everything we have learned this semester, prove that this chair does not exist."

Some students wrote over 30 pages in one hour attempting to refute the existence of the chair. One member of the class however, was up and finished in less than a minute. Weeks later when the grades were posted, the rest of the group wondered how he could have gained an A when he had barely written anything at all.

His answer consisted of two words: "What chair?"